Chapter 10. Input/Output
One of the most underemphasized topics in many university programming courses is input/output (I/O). I/O plays a central role in most real-world applications of computers. Just consider an ATM cash machine, which uses multiple I/O operations for both input—reading your card and reading your typed-in cash request—and output—printing instructions on the screen, printing your receipt, and most important, controlling the machine to output your money!
R is not the tool you would choose for running an ATM, but it features a highly versatile array of I/O capabilities, as you will learn in this chapter. We’ll start with the basics ...
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